John m



(No Model.)

J.M.PENDER.

READING MACHINE FOR SHEET METAL.

No. 506,989. Patented Oct. 17, 1893.

v Witnesses: I inventor 0 .6 SLY/ a W a 9? Attorney- UNiTED STATESPATENT FFIQE.

JOHN M. FENDER, OF LIBERTY, INDIANA, ASSIGNOR TO THE COLUMBIA DRILLCOMPANY, OF SAME PLACE.

BEADlNG-MACHINE FOR SHEET METAL,

SPECIFIGATION formingpart of Letters Patent No. 506,989, dated October17, 1893.

Application filed May 11, 1893- To all whom it may concern:

Be it known that 1, JOHN M. FENDER, of Liberty, Union county, Indiana,have invented certain new and useful Improvements in Beading-Machinesfor Sheet Metal, of which the following is a specification.

This invention relates to a machine for forming a hollow bead along theedge of a straight sheet of metal, the object of the bead being tostiffen the edge of the sheet and produce a finished appearance. Suchbeaded edges are useful in boxes, gutters, 850., formed of sheet metal.

My improved machine will be readily understood from the followingdescription taken in connection with the accompanying drawings, in whichFigure 1, is a transverse section of the beaded edge of a piece of sheetmetal, illustrating the work of my machine; Fig. 2, a front elevation ofthe machine; Fig. 3, an end elevation of the machine; Fig. 4, aplan ofthe table of the machine with the beading agents in position, thehousing being omitted, and Figs. 5, 6, 7, 8, 9 and 10, transversesections of the sheet being operated upon, shown in success ive stagesof the operation.

In the drawings:1, indicates a flat table, to be supported in anysuitable manner and of a size adapted for the sheet of metal to beoperated upon: 2, a groove extending longitudinally in the table topnear one edge, and of a section suited to receive about one-half of thefinished bead which is to be produced upon the sheet: 3, the sheet ofmetal to be operated upon,to be laid upon the table with its edge lyingproperly over the groove 2: 4, a housing arranged to travel along thatedge of the table which is grooved and carry the beading agents: 5, aguide-rib formed upon the table to guide the housing: 6, guidewheelsmounted in the housing and engaging this guide-rib: 7, a longitudinalrack formed on or secured upon the table: 8, a pinion engaging thisrack: 9, the spindle of this pinion, journaled in the housing andadapted to be turned by any suitable means, whereby, in an obviousmanner, the housing, together with the parts carried by it, may betraversed along in either direction upon the table: 10, a roller mountedin the housing over the table, with its Serial No. 473,890- (No model.)

axis horizontal, the edge of the roller being of convex cross-sectionadapted to fit the groove infthe table, sufficient allowance beingmadefor the thickness of metal being worked on: 11, a cylindrical rollermounted in the housing, with its axis vertical and with its inner edgeeven with the outer margin of the groove in the table, this roll beingdisposed just rearwardly beyond roller 10: 12, a roll disposedrearwardly beyond roller 11, and similarly arranged and constructedexcept that it has a flange at its upper portion, this flange projectingover the groove of the table: 13, a concave-edged roller mounted in thehousing, over the groove in the table, and having its periphery concavein cross-section, this roller 13 being disposed rearwardly beyondflanged roll 12: 14, boxes mounted in the housing and carrying the rolls10 and 13, these boxes being seated in vertical slots in the housing:15, screws for adjusting the boxes 14 in the housing whereby the rollers10 and 13 can be adjusted vertically: 16, a finger carried by thehousing and projecting down toward the table, between rolls 11 and 12,the inner face of this finger coming about even with the outer margin ofthe groove in the table: 17, a mandrel carried by the housing and lyingconcentrically in the groove of the table and extending from justrearwarclly of roller 10 to a point rearwardly beyond the center ofroller 13, the forward end of this mandrel turning upwardly to form asupporting shank by which it is attached to the housing: and 18 (Fig. 1)the finished bead formed upon the edge of the sheet of metal.

In its operation the housing moves from right to left as viewed in Figs.2 and 4. The housing will first be moved so far to the right upon thetable that the sheet to be dealt with may be laid in place with its edgeprojecting over and beyond the groove in the table. The housing is thento be moved to the left by turning spindle 9. The sheet will lie uponthe table as shown in Fig. 5. The sheet is first attacked by roller 10which presses the metal of the sheet down into the groove of the tableas shown in Fig. 6, thus forming a groove in the sheet, and in thisgroove the mandrel 17 will lie. As roller 10 produces the guttering ofthe sheet the edge of the IOC sheet will turn up angularly as seen inFig. 6. Roller 11, immediately following roller 10, turns the edge ofthe sheet up square as seen in Fig. 7, and finger 16, engaging thisup-turned edge of the sheet, as seen in Fig. 8, prevents the springingback of the edge. Roll 12, immediately following the finger, folds thelip-turned edge of the sheet over onto the mandrel as shown in Fig. 9,and roller 13, following immediately after roll 12, turns the unfoldededge of the sheet down inwardly around the mandrel and presses the beadto finished shape, the bead being thus completely formed at one passageof the housing along the sheet.

In dealing with sheet steel of considerable thickness and stifiness allof the beading agents illustrated will be found extremely useful, butwith metal of'less thickness or greater softness some of the beadingagents may be dispensed with. Indeed, under some conditions, as tocharacter of metal and size of bead, the entire work may be done byrollers l0 and 13, roller 10 extending the metal and leaving the edge incondition for attack by compressing roller 13 which presses the metalaround the mandrel, and in some cases even the mandrel may be dispensedwith.

I claim as my invention- 1. In a beading machine, the combination,substantially as set forth, of a table provided -with a longitudinalgroove, a housing arranged to be traversed along said table, aconvex-edged roller mounted in said housing over said groove, and aconcave-edged roller carried by said housing over said groove in linewith the first mentioned roller.

2. In a beading machine, the combination, substantially as set forth, ofa longitudinally grooved table, a housing arranged to be traversed alongsaid table, a convex-edged roll and a concave-edged roll carried by saidhousing in the vertical plane of said groove, and a mandrel carried bysaid housing concentric with said groove and extending from between saidtwo rolls to a point outwardly beyond the vertical plane of the centerof the concave-edged roll.

3. In a beading machine, the combination, substantially as set forth,with a grooved table, a housing arranged to be traversed thereon, and aconvex-edged roll and a concaveedged roll carried by the housing in thevertical plane of said groove, of a finger carried by said housingbetween said rolls and presenting asurface near said table at a marginof the groove therein.

4. In a beading machine, the combination, substantially as set forth,with a grooved table, a housing arranged to be traversed thereon, and aconvex-edged roll and a concaveedged roll carried by said housing in thevertical plane of said groove, of a roll carried by said housing betweensaid first mentioned two rolls and having its axis disposed at rightangles to the axis of said first mentioned rolls and having itsperipheryin the vertical plane of a margin of said groove.

5. In a beading machine, the combination, substantially as set forth,with a grooved table, a housing arranged to be traversed thereon, and aconvex-edged roll and a concaveedged roll carried by said housing in theVertical plane of said groove, of a flanged roll carried by said housingbetween said first mentioned two rolls and having its axis disposed atright angles to the axis of said two rolls, the flange of saidintermediate roll projecting over a portion of said groove.

6. In a beading machine, the combination, substantially as set forth, ofa grooved table,

a housing arranged to be traversed thereon,

vertically adjustable boxes carried by the housing, adjusting screws foradjusting said boxes in the housing, a convex-edged roll journaled inone of said boxes in the vertical plane of said groove, and aconcave-edged roll carried by one of said boxes in the vertical plane ofsaid groove.

7. in a beading machine, the combination, substantially as set forth, ofa grooved table, a housing arranged to be traversed thereon, aconvex-edged roll carried by the housingin the vertical plane of saidgroove, a concaveedged roll carried by the housing in the vertical planeof the groove, a cylindrical roll carried by the housing and with itsaxis at right angles to the axis of said two rolls, and with itsperiphery in the vertical plane of a margin of said groove, a flangedroll parallel with said cylindrical roll and with its flange projectingover a portion of said groove, a

finger carried by said housing between said cylindrical roll and saidflanged roll and in the plane of a margin of said groove, and a mandrelcarried by said housing concentric with said groove and extending fromnear the convex-edged roll to a point beyond the vertical plane of thecenter of the concave-edged roll.

8. In a beading machine, the combination, substantially as set forth, ofa grooved table, provided with a guide-rib and a rack, a housing,guide-rollers carried by the housing and engaging said guide-ribs, apinion having a spindle andengaging said rack, and beading rolls carriedby said housing in the plane of said groove.

JOHN M. FENDER.

Witnesses:

FRANK HUSTED, JOHN B. MACY.

